Display Panel Brightness Chromaticity Regulation via Gamma Matching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for regulating brightness and chromaticity in liquid crystal display panels suffer from large deviations, particularly in low gray-scales, making it difficult to achieve consistent and visually appealing color representation.
Innovation Solution
A method that involves obtaining original gray-scale data, regulating green gray-scales to match a standard gamma curve, matching color coordinates of red and blue using green gray-scales, and calculating weight coefficients to adjust target gray-scales of red and blue, allowing for automatic regulation of brightness and chromaticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the prior art method is used to regulate brightness and chromaticity, then the regulation process can be completed, but large deviations occur particularly in low gray-scales
Solution Approach 1:
The patent segments the color coordinate regulation process into two distinct parts: low gray-scales (0-127) and high gray-scales (128-255). Different calculation methods are applied to each segment, with low gray-scales using a specialized formula that references the approximation line of color temperature, while high gray-scales use a different approach. This segmentation allows each part to be optimized independently, resolving the contradiction by achieving high precision in both measurement and manufacturing across the entire gray-scale range.
Solution Approach 2:
The patent applies local quality by using different calculation strategies for different gray-scale ranges. For low gray-scales, a specific calculation method referencing the approximation line of color temperature is used to maintain color accuracy. For high gray-scales, a different method is applied. This localized approach ensures that each gray-scale range receives the most appropriate regulation method, thereby achieving both high measurement precision and manufacturing precision simultaneously.
2Productivity
If automatic regulation method is implemented, then efficiency is improved, but color coordinates of low gray-scales deviate from standards
Solution Approach 1:
The patent changes the calculation parameters and formulas based on the gray-scale range. For low gray-scales, it uses a parameterized approach that references the approximation line of color temperature with specific weight coefficients (0.6 for low gray-scales, 0.4 for high gray-scales). This parameter change allows the automatic regulation system to maintain high efficiency while achieving accurate color coordinates across all gray-scales by adapting the calculation method to the specific range being processed.
Solution Approach 2:
The patent performs preliminary actions by pre-establishing the approximation line of color temperature and pre-calculating reference color coordinates for both low and high gray-scales. This preliminary preparation enables the automatic regulation process to efficiently compute final color coordinates using weighted combinations of pre-computed values, maintaining both high productivity and manufacturing precision without requiring complex real-time calculations.
3Ease of manufacture
If gamma regulation is performed first followed by color coordinate matching, then the process follows standard procedure, but brightness and chromaticity cannot be simultaneously optimized
Solution Approach 1:
The patent merges the gamma regulation and color coordinate matching processes into a unified calculation framework. Instead of treating them as separate sequential steps, it combines them by using the same weight coefficient system (0.6/0.4 for low/high gray-scales) to simultaneously optimize both brightness (gamma) and chromaticity (color coordinates). This merging allows both parameters to be optimized together while maintaining a standardized, computationally efficient process.
Solution Approach 2:
The patent creates a universal calculation method that serves multiple functions simultaneously. The same approximation line of color temperature and weight coefficient system are used for both gamma regulation and color coordinate matching across different gray-scale ranges. This multi-functional approach eliminates the need for separate optimization processes, achieving simultaneous brightness and chromaticity optimization while maintaining ease of manufacture through a single unified algorithm.
Data Source
AI summary
A method for regulating brightness and chromaticity of a display panel includes: obtaining original gray-scale data; regulating gray-scales of green, so that brightness values of pixels match a standard gamma curve; matching color coordinates of red and blue using the gray-scales of green; determining a weight coefficient according to a gradation of the gray-scales of green; and calculating and recording color coordinates of target gray-scales of red and blue using the determined weight coefficient.